CVE-2026-68117: tipc: clear sock->sk on the failed-insert path in tipc_sk_create()

lowCVSS 3.6CVE-2026-68117

CSIRTS triage

vendor: Linux product: Linux kernel Memory corruption

What: Failed socket creation path leaves dangling pointer in TIPC socket structure.
Who is affected: Systems running affected Linux kernel versions with TIPC networking enabled.
Urgency: Low severity (CVSS 3.6) and not exploited; routine patching sufficient.
Action: Apply Linux kernel security patch for CVE-2026-68117 or update to patched kernel version.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: low — CVSS 3.6
Published: 2026-08-11
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68117

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-681170.47% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 39% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-68117	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for tipc

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

highCVE-2026-74490: In the Linux kernel, the following vulnerability has been resolved: tipc: avoid use-after-free…nvd · 2026-08-15
highCVE-2026-74283: In the Linux kernel, the following vulnerability has been resolved: tipc: require net admin fo…nvd · 2026-08-15
highCVE-2026-74282: In the Linux kernel, the following vulnerability has been resolved: tipc: prevent snt_unacked …nvd · 2026-08-15
highCVE-2026-74281: In the Linux kernel, the following vulnerability has been resolved: tipc: reject inverted serv…nvd · 2026-08-15
criticalCVE-2026-74255: In the Linux kernel, the following vulnerability has been resolved: tipc: fix UAF in tipc_l2_s…nvd · 2026-08-15
highCVE-2026-72404: In the Linux kernel, the following vulnerability has been resolved: tipc: fix UAF in cleanup_b…nvd · 2026-08-15